Seachem Laboratories PhosGuard
Information

PhosGuard is a high capacity and high efficiency filtration product for removing phosphates and silicates from marine or fresh water aquaria. Unlike competing products, PhosGuard is bead-shaped for optimum flow characteristics and has an exceptional porosity for enhanced capacity. PhosGuard has a working capacity to remove 20 to 60 mg/L phosphate in 100 gallons with a similar impact on silicates. It may be used continuously or intermittently, and will not release removed phosphate. PhosGuard will cause a decline in hair algae and enhance coral growth. Each liter treats up to 300 gallons. Marine or freshwater use.

SeachemSeachem Laboratories, Inc. was established in 1980 by Dr. Leo G. Morin. Seachem moved into a state of the art 110,000 square foot facility in Madison, Georgia marking their 25th anniversary in the industry in 2005. This facility includes production and research laboratories, manufacturing, inventory, shipping, and office space.

Seachem Laboratories PhosGuard
Reviews

gets rid of unwanted algae

by
OSCAR VASCOS

Excellent!

Posted: 11/30/2013 from MOORPARK, CA UNITED STATES

5.05

Experience Level:
Expert

Comments:I love this stuff. I used to stress out over nuisance algae showing up on my rock when my nitrates and phosphates read zero on my salifert test kits. Now whenever the algae starts to show up, I replace the stocking full of phosguard with a fresh one. Within a few days, any exposed rock in my tank looks super clean without a trace of algae. It must be removing unreadable phosphate levels I'm guessing. Whatever the mechanism, it breaks my algae cycle and eliminates it.

Works Great

by
ADRIAN PEREZ

Excellent!

Posted: 11/8/2012 from HIALEAH, FL UNITED STATES

5.05

Experience Level:
Intermediate

Comments:I've used this product for a while now and have had great results with it. This is used in the same way as many others and in my opinion works just as well as some of the more expensive ones giving you the same results. My phosphates are zero and being able to buy it in a larger quantity makes it even better.

PhosGuard

by
DONALD DOWDY

Excellent!

Posted: 12/1/2011 from MOYOCK, NC UNITED STATES

5.05

Experience Level:
Intermediate

Comments:I have been using this product for over a year and it does a great job keeping levels down. It is simple to use with the reactor which makes maintenance a breeze. I would recommend this product for every aquarium enthusiast! Also great price compared to retail stores which is always a plus!!

Good Stuff

by
SCOTT REHAK

Great

Posted: 7/26/2011 from QUEEN CREEK, AZ UNITED STATES

4.05

Experience Level:
Intermediate

Comments:Phosguard has worked well for me I have a bag in me canister filter and in my pre-mixed saltwater storage to remove the phosphates from the r.o. water im using my phosphates are very low and alge isn't a problem.

Works as advertised

by
MICHAEL RICHMAN

Great

Posted: 4/11/2011 from Norman, OK UNITED STATES

4.05

Experience Level:
Intermediate

Comments:I have about 180 gallons in my reef setup with a couple of hungry tangs and several other smaller fish. The system uses RO/DI water with 0 phosphates. The fish eat frozen food for the most part. Even if "decanted" with the DI water, feeding introduces phosphates into the system. The coarals (mainly SPS) get fed once a week. Eventually, the phosphates creep up, even with 10% weekly water changes, skimming, etc. I have used several products to keep phosphates low (SPS does not like phosphates as it hinders their growth). With PhosGuard, I rinse the material, then put 1 liter of PhosGuard in a fluidized reactor and run a *slow* flow through the reactor. I test with a Hanna meter, which reads down to 0.01 ppm. PhosGuard works fairly quickly and lasts several weeks in the reactor. After two weeks, it turns brown, although it keeps the PO4 below 0.05 ppm for another week. Once the PO4 starts to creep up, the reactor material gets changed. Since the material is fairly large, it is easier to change than RowaPhos (the only other material I have used). Compared to Rowaphos, PhosGuard is much cheaper, is less of a mess to work with and clean up, does not turn the water brown, seems to last a little longer between changes, and does not cake up after a few weeks. However, Rowaphos works faster which, can be a blessing or a curse. If used in too large a quantity, a sudden change in PO4 can shock a system. The only con I have read about for PhosGuard is that it is aluminum-based (compared to Rowaphos, which is iron oxide based) and some people claim that PhosGuard leaches aluminum into the water. I'm not sure that is a problem, but it is worth investigating.

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